PostgreSQL has many advantages, some of which are:-

1.PostgreSQL is fully open-source and free to use.

2.PostgreSQL support Materialised views which pre-computed data set derived from a query.

3.PostgreSQL supports ACID by default.

4.PostgreSQL supports techniques to store geographic data such as PostGIS, DBLink, etc.

5.PostgreSQL can be easily scaled as per the user's need by adding more servers.